CN106459696B - Adhesive sheet and method for producing adhesive sheet - Google Patents
Adhesive sheet and method for producing adhesive sheet Download PDFInfo
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- CN106459696B CN106459696B CN201580034582.8A CN201580034582A CN106459696B CN 106459696 B CN106459696 B CN 106459696B CN 201580034582 A CN201580034582 A CN 201580034582A CN 106459696 B CN106459696 B CN 106459696B
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- pressure
- sensitive adhesive
- adherend
- sheet
- laminate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Provided are a pressure-sensitive adhesive sheet and a method for producing the same, wherein at least a substrate, a pressure-sensitive adhesive layer and a release sheet are laminated, and the characteristics of an adhesive laminate comprising the substrate and the pressure-sensitive adhesive layer can be clearly identified regardless of the form of the adhesive laminate. The pressure-sensitive adhesive sheet comprises a pressure-sensitive adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer laminated thereon, and a release sheet, wherein the pressure-sensitive adhesive laminate is molded on the release sheet into a pressure-sensitive adhesive part for attachment to an adherend and a discriminating part for discriminating the properties of the pressure-sensitive adhesive laminate, and the pressure-sensitive adhesive part and the discriminating part are arranged on the same release sheet in a planar manner.
Description
Technical Field
The present invention relates to an adhesive sheet and a method for producing an adhesive sheet.
In particular, the present invention relates to a pressure-sensitive adhesive sheet (release sheet-attached pressure-sensitive adhesive sheet) in which at least a substrate, a pressure-sensitive adhesive layer and a release sheet are laminated, and which can clearly identify the characteristics of an adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer regardless of the form of the adhesive laminate, and a method for producing the same.
Background
Conventionally, an adhesive laminate in which a base material and an adhesive layer are laminated has been used for a label for indication indicating a predetermined content, a tape for fixing a member in an electric product, or the like, or a protective film for protecting a member from dirt or damage in an assembly process of an electric product, which is suitable for each application.
Such an adhesive laminate has various forms depending on the use thereof, and for example, a very small laminate, a laminate having a cut portion, and the like are widely used (for example, patent document 1).
That is, patent document 1 discloses a printing method of a continuous body of an extremely small label for printing on an extremely small label, which includes a printer housing, a platen roller provided in a printing portion for printing a continuous body of a label transferred on a transfer path formed in the printer housing, a detection portion for detecting a position of the continuous body of the label, and a control portion for controlling the detection portion and the printing portion; setting the interval between the label outlet of the printer shell and the flat pressing roller as a minimum label printing area in the transferring direction, wherein the minimum label printing area reaches the minimum size limit as the size of a printable label; the label continuous body is a minute label continuous body having a tape-shaped backing paper and a plurality of minute labels pre-adhered to the backing paper and having a pitch of a minimum label printing area. More specifically, the present invention discloses a printing method of an extremely small label continuum, characterized in that, for extremely small labels in which only a predetermined number of sheets can be arranged in one unit of a minimum label printing area, a slit is cut in a width direction in the minimum label area in the one unit in accordance with the size of each of the extremely small labels to separate label arrangement areas in which the respective extremely small labels are formed, and the contents printed on the extremely small labels of the predetermined number are supplied to the label arrangement area of each of the extremely small labels to be printed on the extremely small labels, and further, for extremely small labels in which the number of sheets is smaller than the number of label arrangement areas in one unit of the minimum label printing area, printing is performed in order from the extremely small label positioned at the tip in the minimum label printing area.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 4769109 (patent claims).
Disclosure of Invention
Problems to be solved by the invention
However, in the case where the extremely small labels obtained by the printing method of the extremely small label continuous body described in patent document 1 have the same or similar appearance as the extremely small labels but have a plurality of types of labels having different characteristics such as adhesive force depending on the application, it may be difficult to clearly identify them.
Therefore, in a work site where a plurality of kinds of labels are applied to a plurality of kinds of adherends, there is a problem that workers easily confuse labels having different characteristics.
Further, the extremely small label described in patent document 1 has a problem that, even if it is intended to perform recognition by measuring characteristics such as adhesive force in the case of actual confusion, it is difficult to easily and accurately measure the characteristics because the label is extremely small, and as a result, recognition after the fact becomes difficult.
Therefore, a technique is required that can clearly identify the characteristics of the adhesive laminate regardless of the form of the adhesive laminate.
In view of the above circumstances, the present inventors have diligently made efforts to find that the above problems can be solved by molding a pressure-sensitive adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer on a release sheet into a portion for applying to an adherend to be adhered and a portion for discriminating the properties of the pressure-sensitive adhesive laminate, and by disposing the portion for applying to an adherend and the portion for discriminating on the same release sheet in a planar manner, and have completed the present invention.
That is, an object of the present invention is to provide a pressure-sensitive adhesive sheet and a method for producing the same, in which the characteristics of an adhesive laminate (adherend-attaching portion) including a substrate and a pressure-sensitive adhesive layer can be clearly recognized regardless of the form of the adhesive laminate.
Means for solving the problems
According to the present invention, there is provided a pressure-sensitive adhesive sheet comprising a substrate, a pressure-sensitive adhesive layer and a release sheet laminated thereon, wherein the pressure-sensitive adhesive laminate comprising the substrate and the pressure-sensitive adhesive layer is molded on the release sheet into an adherend attachment portion for attachment to an adherend and a discrimination portion for discriminating the properties of the pressure-sensitive adhesive laminate, and the adherend attachment portion and the discrimination portion are arranged on the same plane on the release sheet, whereby the above-mentioned problems can be solved.
That is, as long as the pressure-sensitive adhesive sheet of the present invention is obtained by molding the pressure-sensitive adhesive laminate into the adherend attaching part and the discrimination part, it is possible to clearly discriminate a plurality of pressure-sensitive adhesive sheets which are difficult to discriminate from the planar shape of the adherend attaching part, such as the case where the adherend attaching part has the same or similar planar shape but has different properties such as adhesive force.
Although the identification may be performed by coloring, printing, or the like, in this case, a separate step of coloring, printing, or the like is required, which causes a problem in terms of cost.
In addition, in the field of the technique of delivering a psa sheet having a short delivery cycle, these steps are carried out, which causes a problem in terms of time.
In this regard, as long as the pressure-sensitive adhesive sheet of the present invention is used, the identification part can be molded simultaneously with the molding of the adherend attaching part, and therefore such a problem can be solved.
In the case of constituting the pressure-sensitive adhesive sheet of the present invention, the planar shape of the identification portion is preferably at least one selected from the group consisting of a rectangle, a substantially rectangle, an ellipse, a substantially ellipse, a circle, a substantially circle, a triangle, a substantially triangle, a pentagon, a substantially pentagon, a star, a letter and a number.
By configuring in this manner, the identification portion can be used to more clearly identify the object.
Another aspect of the present invention is a method for producing a pressure-sensitive adhesive sheet, the method comprising the following steps (I) to (II):
(I) preparing a pressure-sensitive adhesive sheet before molding in which at least a base material, a pressure-sensitive adhesive layer, and a release sheet are laminated;
(II) a step of molding an adhesive laminate comprising a substrate and an adhesive layer on a release sheet into an adherend attaching part for attaching to an adherend and a discriminating part for discriminating the characteristics of the adhesive laminate, and disposing the adherend attaching part and the discriminating part on the same release sheet in a planar manner to obtain an adhesive sheet.
That is, in the method for producing a pressure-sensitive adhesive sheet according to the present invention, the pressure-sensitive adhesive laminate comprising the substrate and the pressure-sensitive adhesive layer is molded on the release sheet so as to have the adherend-attaching part for attaching to the adherend and the discrimination part for discriminating the characteristics of the pressure-sensitive adhesive laminate, and the adherend-attaching part and the discrimination part are arranged on the same plane on the release sheet, and therefore, a pressure-sensitive adhesive sheet can be obtained which can more clearly discriminate a plurality of pressure-sensitive adhesive sheets which are difficult to discriminate from the plane shape of the adherend-attaching part regardless of the form of the adherend-attaching part.
In the method for producing the adhesive sheet of the present invention, in the step (II), it is preferable to perform the punching process by using a punching machine having a first processing means corresponding to the planar shape of the adherend attaching portion and a second processing means corresponding to the planar shape of the identification portion as the molding process.
By performing this, the identification portion and the adherend attaching portion can be molded at the same time.
Drawings
FIG. 1: FIGS. 1(a) to (b) are views for explaining the adhesive sheet of the present invention.
FIG. 2: FIGS. 2(a) to (c) are additional views for explaining the adhesive sheet of the present invention.
FIG. 3: FIGS. 3(a) to (b) are still another views for explaining the adhesive sheet of the present invention.
FIG. 4: FIGS. 4(a) to (e) are views for explaining a method for producing the adhesive sheet of the present invention.
Detailed Description
[ first embodiment ]
A first embodiment of the present invention is a pressure-sensitive adhesive sheet 20, as shown in fig. 1(a) to (b), which is a pressure-sensitive adhesive sheet 20 in which at least a substrate 6, a pressure-sensitive adhesive layer 4, and a release sheet 2 are laminated, characterized in that an adhesive laminate 10 including the substrate 6 and the pressure-sensitive adhesive layer 4 is molded on the release sheet 2 into an adherend attaching part 12 for attaching to an adherend and a recognition part 14 for recognizing the characteristics of the adhesive laminate 10, and the adherend attaching part 12 and the recognition part 14 are arranged on the same release sheet 2 in a planar manner.
Fig. 1(a) is a plan view of the adhesive sheet of the present invention, and fig. 1(b) is a cross-sectional view of the adhesive sheet cut along a plane defined by line a-a in fig. 1 (a).
In fig. 1(b), the portion of the adhesive laminate 10 other than the adherend attaching portion 12 and the physical property measurement portion 14 is shown in a state of being removed by peeling (the same applies to fig. 2(b) described later).
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the accompanying drawings as appropriate.
1. Release sheet
The release sheet in the present invention is not particularly limited, and examples thereof include a release sheet provided with a release layer by coating a release material such as a silicone-based or rubber-based release agent on a polyester film such as polyethylene terephthalate, polybutylene terephthalate, or polyethylene naphthalate, a polyolefin film such as polypropylene or polyethylene, or a paper-based release material.
The thickness of the release sheet is preferably in the range of 20 to 150 μm, and more preferably in the range of 25 to 75 μm.
2. Adhesive laminate
In the present invention, the adhesive laminate means a laminate comprising a substrate and an adhesive layer, and means a portion other than the release sheet in the adhesive sheet.
The following description will be made of a substrate and an adhesive layer which are components of the adhesive laminate.
(1) Base material
The substrate in the present invention is not particularly limited, and can be suitably selected from plastic films, paper substrates, nonwoven fabrics, and the like, which have been conventionally used as substrates of pressure-sensitive adhesive sheets.
For example, in the case of a plastic film, polyester films such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate; a polyethylene film, a polypropylene film, a polyvinyl chloride film, a polyvinylidene chloride film, a polyvinyl alcohol film, an ethylene-vinyl acetate copolymer film, a polystyrene film, a polycarbonate film, a polymethylpentene film, a polysulfone film, a polyether ether ketone film, a polyether sulfone film, a polyphenylene sulfone film, a polyether imide film, a polyimide film, a fluorine resin film, a polyamide film, an acrylic resin film, a norbornene resin film, a cycloolefin resin film, or the like.
The film thickness of the substrate is preferably 10 to 300 μm, and more preferably 20 to 150 μm.
(2) Adhesive layer
The pressure-sensitive adhesive layer in the present invention is not particularly limited, and conventionally known pressure-sensitive adhesives such as acrylic, silicone, urethane, and rubber adhesives can be used.
As the type of the adhesive, an active energy ray-curable adhesive or a hot-melt adhesive may be used.
The thickness of the adhesive is preferably 1 to 200 μm, and more preferably 5 to 50 μm.
(3) Other layers
In addition, other layers such as an intermediate layer and an easy-bonding layer may be laminated on the adhesive laminate in addition to the substrate and the adhesive layer.
(4) Part for attaching adherend
The adhesive laminate of the present invention is characterized by having an adherend attaching part for attaching to an adherend.
The form of the adherend attaching portion is not particularly limited, and the following forms will be exemplified: when a plurality of pressure-sensitive adhesive sheets having pressure-sensitive adhesive laminates having different properties are actually mixed up, even if identification is intended by measuring the properties such as adhesive strength, measurement of the physical properties of the portion to be adhered to the adherend is particularly difficult, that is, when the pressure-sensitive adhesive sheet is identified, the form of the portion to be identified, which will be described later, is particularly necessary.
(4) -1 area
Firstly, the methodAs a first form in which the measurement of the characteristics using the adherend attaching part becomes particularly difficult, there can be mentioned a form in which the area of the adherend attaching part 12 in the shape thereof is 400mm as shown in FIG. 1(a)2The following values.
The reason for this is that if the area of the planar shape of the adherend attaching part reaches 400mm2The following values are insufficient in area, and therefore, when the portion to be bonded to the adherend is directly used as a sample or when the sample is prepared by processing the portion to be bonded to the adherend, it is difficult to measure the characteristics using the portion to be bonded to the adherend.
The planar shape of the adherend attaching portion is circular in fig. 1(a), but the planar shape is not particularly limited, and may be any shape such as an oval shape or a rectangular shape according to the application.
The "planar shape" in the present invention refers to a shape of the adhesive sheet when viewed from above the substrate side as shown in fig. 1 (a).
(4) -2 non-contact part
As a second form in which the measurement of the characteristics using the adherend attaching part becomes particularly difficult, there is a form in which the pressure-sensitive adhesive layer 4 of the adherend attaching part 12 has a non-contact portion 50 which is not in contact with the adherend 100 in part, as shown in fig. 2(a) to (c).
The reason for this is that, when the adherend attaching portion has a non-contact portion, the measurement result is affected by the characteristics of the non-contact portion, and therefore, it is difficult to measure the characteristics using the adherend attaching portion.
The adherend attaching portion having the noncontact portion can be used, for example, in the following cases: and a case where a protective film is attached to the lens portion so as not to directly contact the adhesive layer when assembling a precision component such as a lens unit of a digital camera.
Therefore, the planar shape, the three-dimensional shape, the arrangement, the number, and the like of the noncontact sections are not particularly limited, and the general examples thereof include the forms shown in fig. 2(a) to (c).
The non-contact portion may be formed by punching the adherend attaching portion and pressing the concave portion of the upper die and the convex portion of the lower die.
Fig. 2(a) is a plan view of the adhesive sheet of the present invention, fig. 2(B) is a cross-sectional view of the adhesive sheet cut along a plane defined by a line B-B in fig. 2(a), and fig. 2(c) is a view showing a portion of the adhesive sheet shown in fig. 2(B) to which an adherend is attached.
(5) Identification part
The adhesive laminate of the present invention is characterized by having a recognition portion for recognizing the characteristics of the adhesive laminate.
The reason is that many types of pressure-sensitive adhesive sheets that are difficult to be recognized from the planar shape of the adherend-attaching portion can be clearly recognized, as in the case where the planar shape of the adherend-attaching portion is the same or similar but the characteristics such as adhesive force are different.
The identification portion will be specifically described below.
(5) -1 identifying object characteristics
The characteristics of the object to be recognized by the recognition portion are not particularly limited, and examples thereof include gel fraction in the adhesive layer, storage modulus, adhesive force in the substrate or the entire adhesive laminate, holding power, total light transmittance, haze value, and the like.
(5) -2 shape
The planar shape of the identification part is at least one selected from the group consisting of a rectangle, an approximate rectangle as shown in fig. 1(a) and 2(a), an ellipse, an approximate ellipse, a circle, an approximate circle, a triangle, an approximate triangle, a pentagon, an approximate pentagon, a star, a letter, and a number.
The reason for this is that by making the planar shape of the identification portion into these shapes, the identification portion can be used to perform identification more clearly.
Further, by forming the planar shape of the identification portion into these shapes, even when it is difficult to measure the characteristics such as the adhesive force in the adhesive laminate by the adherend attaching portion, it is possible to easily and accurately measure the characteristics by using the identification portion.
The planar shape of the identification portion is preferably character information such as a numeral shown in fig. 3(a) or a letter shown in fig. 3 (b).
The reason for this is that if the information is such a character, the characteristics of the adhesive laminate can be recognized more clearly.
Fig. 3(a) to (b) are plan views of the adhesive sheet of the present invention.
(5) -3 size
Further, the maximum diameter in the planar shape of the identification portion is preferably in the range of 20 to 300 mm.
The reason for this is that if the maximum diameter is a value smaller than 20mm, it is difficult to visually confirm the planar shape of the portion for identification, and the visibility may be lowered. On the other hand, if the maximum diameter is a value larger than 300mm, the area of the adherend attachment portion that can be planarly arranged on the same release sheet may be excessively limited.
The maximum diameter in the present invention means a diameter of a circumscribed circle when the circumscribed circle is drawn on a planar shape of the recognition portion.
In addition, when the planar shape of the discrimination part is a rectangle, a nearly rectangle, an ellipse, or a nearly ellipse, the length in the major axis direction is preferably a value in the range of 20 to 300mm, more preferably a value in the range of 30 to 250mm, and further preferably a value in the range of 45 to 200mm, from the viewpoint of easily and accurately measuring the characteristics of the adhesive laminate.
The length (width) in the minor axis direction is preferably within a range of 1 to 30mm, more preferably within a range of 1.5 to 28mm, and still more preferably within a range of 2 to 25 mm.
(5) -4 configuration
In the present invention, as shown in fig. 1(a), 2(a), and 3(a) to (b), the adherend attaching part 12 and the identification part 14 are arranged on the same release sheet 2 in a planar manner.
The reason for this is that, by configuring in this way, since the identification portion arranged on the same release sheet in a flat surface indicates the characteristics of the adherend attaching portion, it is possible to reliably prevent confusion with other adhesive sheets.
In addition, as in the case of a conventional adhesive sheet having no identification portion, the planar arrangement of the adherend bonding portion is preferably such that the molding area is maximized within a range that does not cause a reduction in workability in use, as shown in fig. 1(a), 2(a), and 3(a) to (b).
On the other hand, in the planar arrangement form of the identification portion, it is preferable that, for example, the identification portion is arranged in a planar manner at a position along any one side of the adhesive sheet as shown in fig. 1(a) and 2(a) or at a position near a corner surrounded by two sides as shown in fig. (a) to (b) outside a portion where the adherend attaching portion is arranged in a planar manner.
The reason for this is that by performing the planar arrangement in this way, it is possible to suppress the obstruction of the planar arrangement of the adherend attaching portion and also suppress the reduction of the workability when the adherend attaching portion is used.
However, the portion to be bonded may be arranged in a plane so as to pass through the plane, as long as the arrangement of the portion to be bonded in a plane is not hindered and the operability is not impaired.
[ second embodiment ]
A second embodiment of the present invention is a method for producing a pressure-sensitive adhesive sheet according to the first embodiment, including the following steps (I) to (II):
(I) preparing a pressure-sensitive adhesive sheet before molding in which at least a base material, a pressure-sensitive adhesive layer, and a release sheet are laminated;
(II) a step of molding an adhesive laminate comprising a substrate and an adhesive layer on a release sheet into an adherend attaching part for attaching to an adherend and a discriminating part for discriminating the physical properties of the adhesive laminate, and disposing the adherend attaching part and the discriminating part on the same release sheet in a planar manner to obtain an adhesive sheet.
Hereinafter, a second embodiment of the present invention will be described in detail while referring to the drawings, focusing on differences from the first embodiment.
1. A step (I): preparation process of adhesive sheet
Step (I) is a step of preparing a pressure-sensitive adhesive sheet before molding in which at least a substrate, a pressure-sensitive adhesive layer and a release sheet are laminated.
The above-mentioned step can be carried out by a conventionally known method.
More specifically, when an acrylic non-active ray-curable adhesive composition is used as an example, it is preferable that an adhesive layer is formed by applying the adhesive composition to a release sheet and drying the adhesive composition, and then the resulting adhesive layer is laminated on a substrate.
The pressure-sensitive adhesive sheet before molding is previously produced as a continuous strip, and if necessary, may be cut into individual sheets at predetermined intervals after the subsequent molding step.
2. Step (II): shaping process
The step (II) is a step of obtaining the psa sheet 20 as follows: as shown in fig. 4(a) to (e), an adhesive laminate 10 including a base material 6 and a pressure-sensitive adhesive layer 4 is molded on a release sheet 2 into an adherend attaching part 12 and a recognition part (not shown), and the adherend attaching part 12 and the recognition part (not shown) are arranged on the same release sheet 2 in a planar manner, thereby obtaining a pressure-sensitive adhesive sheet 20.
The molding may be performed by a conventionally known method, and for example, may be performed by punching, laser processing, or the like as shown in fig. 4(a) to (b).
Fig. 4(a) to (b) are side sectional views showing the punching process.
As the molding process, as shown in fig. 4(a) to (b), it is preferable to perform a punching process using a punching machine 200 having a first processing means 214 corresponding to the planar shape of the adherend attaching part 12 and a second processing means (not shown) corresponding to the planar shape of the identification part (not shown).
The reason is that if the punching process is performed by using such a punching machine, the identification portion and the adherend attaching portion can be molded at the same time.
In the punching process shown in fig. 4(a) to (b), an adhesive sheet 20 is produced in which the adhesive layer 4 of the adherend attaching part 12 shown in fig. 2(a) to (c) has a non-contact part 50 which is not in contact with the adherend 100.
The following description will specifically describe the punching process shown in fig. 4(a) to (b).
That is, as shown in fig. 4(a), the adhesive sheet 20' before the molding process is transferred in the transfer direction E at a constant transfer pitch in a state where the upper die 210 and the lower die 220 of the punching machine 200 are separated, and then, as shown in fig. 4(b), the punching process is performed by pressing the upper die 210 and the lower die 220 while the transfer is stopped.
More specifically, as shown in fig. 4(c) to (e), in the adhesive laminate 10 which is a laminate including the base material 6 and the pressure-sensitive adhesive layer 4, a notch corresponding to the planar shape of the adherend attaching part 12 is formed by the first processing means 214 in the upper die 210, and a notch corresponding to the planar shape of the recognition part 14 is formed by the second processing means (not shown in the figure) in the upper die 210.
Fig. 4(c) is a plan view of the adhesive sheet obtained in the punching process shown in fig. 4(a) to (b), fig. 4(d) is a cross-sectional view when the adhesive sheet is cut on a plane passing through a line X-X in fig. 4(c), and fig. 4(e) is a cross-sectional view when the adhesive sheet is cut on a plane passing through a line Y-Y in fig. 4 (c).
At the same time, the adhesive sheet 20' before the molding process has a portion corresponding to the adherend attaching part 12, and the non-contact part 50 is formed in the adherend attaching part 12 by forming a dome shape by the concave part 212 of the upper mold 210 and the convex part 222 of the lower mold 220.
Then, when the upper mold 210 and the lower mold 220 are separated from each other, the continuous body of the adhesive sheet 20 and the adhesive sheet 20' before processing is transferred in the transfer direction E at a constant transfer pitch, and the above steps are repeated.
Then, the continuous body of the adhesive sheet 20 obtained by repeating the above steps is cut into individual pieces, whereby the final adhesive sheet 20 shown in fig. 4(c) to (e) can be obtained.
In the final adhesive sheet 20 shown in fig. 4(c) to (e), the portions other than the adherend attaching part 12 and the identification part 14 in the adhesive laminate 10 are peeled off and removed.
This is because, in the case of using the pressure-sensitive adhesive sheet, the adherend attaching portion and the adherend recognizing portion can be easily peeled off.
The peeling and removing step may be performed at any point from the punching step to the cutting step or the winding step, and may be omitted in some cases.
Although the punching process steps shown in fig. 4(a) to (b) are specifically described as an example, the order of the punching process for molding the adherend attaching part and the identification part, the embossing process for forming the non-contact portion, and the cutting process for cutting into individual pieces is not particularly limited.
Therefore, for example, the psa sheet before the molding process may be cut into individual pieces, and then the non-contact portions may be formed by embossing, and finally the punching process may be performed.
Alternatively, the psa sheet before molding may be punched and cut into individual pieces, and the non-contact portions may be formed by embossing.
Alternatively, the psa sheet may be punched before the molding process, and then cut into individual sheets while forming the non-contact portions by the embossing.
Industrial applicability
As described in detail above, according to the pressure-sensitive adhesive sheet of the present invention, the pressure-sensitive adhesive laminate comprising a substrate and a pressure-sensitive adhesive layer is molded on a release sheet into a portion for sticking to an adherend and a portion for discriminating the characteristics of the pressure-sensitive adhesive laminate, and the portion for sticking to the adherend and the portion for discriminating are arranged on the same release sheet on a plane, whereby the characteristics of the pressure-sensitive adhesive laminate can be clearly discriminated regardless of the form of the pressure-sensitive adhesive laminate (the portion for sticking to an adherend).
Therefore, in the pressure-sensitive adhesive sheet and the like of the present invention, it is expected that the worker can be prevented from confusing the labels, the protective films, and the like having different characteristics at the work site for applying various kinds of labels, protective films, and the like to the adherend, and the pressure-sensitive adhesive sheet and the like significantly contribute to the improvement of the production efficiency of the product.
Description of the reference numerals
2: a release sheet; 4: an adhesive layer; 6: a substrate; 10: an adhesive laminate; 12: a portion to be bonded for attaching an adherend; 14: a portion for identification; 20: an adhesive sheet; 20': an adhesive sheet before molding; 50: a non-contact portion; 100: an adherend; 200: blanking and processing machine; 210: an upper side mold; 212: a recess; 214: a first processing means; 220: a lower mold; 222: a convex portion.
Claims (2)
1. A method for identifying physical properties of a pressure-sensitive adhesive layer of a pressure-sensitive adhesive sheet or of an adhesive laminate comprising a pressure-sensitive adhesive sheet having laminated thereon at least a substrate, a pressure-sensitive adhesive layer and a release sheet, or comprising the substrate and the pressure-sensitive adhesive layer,
molding the adhesive laminate on the release sheet into an adherend attaching portion for attaching to an adherend and a discriminating portion for discriminating the characteristics of the adhesive laminate,
the area of the planar shape of the adherend attaching part is 400mm2The following values are set forth for the values,
the planar shape of the identification part is at least one selected from the group consisting of a rectangle, an ellipse, a circle, a triangle, a pentagon, a star, a letter and a number,
the maximum diameter in the planar shape of the identification part is a value in the range of 20 to 300mm,
and the adherend attaching part and the identification part are arranged on the same release sheet in a planar manner,
at least one characteristic selected from the group consisting of gel fraction in the pressure-sensitive adhesive layer, storage modulus, adhesive force, holding power, total light transmittance, and haze value in the substrate or the entire pressure-sensitive adhesive laminate is recognized by the recognition portion.
2. The method of identifying physical properties of an adhesive layer or an adhesive laminate of an adhesive sheet according to claim 1, wherein the adhesive layer of the adherend attaching portion has a non-contact portion which is not in contact with the adherend in part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014134277 | 2014-06-30 | ||
| JP2014-134277 | 2014-06-30 | ||
| PCT/JP2015/062033 WO2016002317A1 (en) | 2014-06-30 | 2015-04-21 | Adhesive sheet and production method for adhesive sheet |
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| CN106459696A CN106459696A (en) | 2017-02-22 |
| CN106459696B true CN106459696B (en) | 2020-07-03 |
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| CN201580034582.8A Active CN106459696B (en) | 2014-06-30 | 2015-04-21 | Adhesive sheet and method for producing adhesive sheet |
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| Country | Link |
|---|---|
| JP (1) | JP6521962B2 (en) |
| KR (1) | KR102341088B1 (en) |
| CN (1) | CN106459696B (en) |
| PH (1) | PH12016502310A1 (en) |
| TW (1) | TWI701312B (en) |
| WO (1) | WO2016002317A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10140105A (en) * | 1996-11-13 | 1998-05-26 | Seiko Epson Corp | Self-adhesive sheet for image forming apparatus and method for transporting self-adhesive sheet for image forming apparatus |
| JP2008018614A (en) * | 2006-07-12 | 2008-01-31 | Lintec Corp | Laminated sheet, winding body for laminated sheet and method for manufacturing them |
| CN101124285A (en) * | 2005-02-21 | 2008-02-13 | 琳得科株式会社 | Multilayer sheet, winding of multilayer sheet, and method for producing them |
| JP2009160869A (en) * | 2008-01-09 | 2009-07-23 | Lintec Corp | Laminated sheet, laminated sheet roll and their production process |
| JP2011068130A (en) * | 2009-08-26 | 2011-04-07 | Kantaro Nomura | Textile seal, textile sheet, seal, adhesive sheet, and method of manufacturing the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29818419U1 (en) * | 1998-10-15 | 1999-01-28 | Idento - Gesellschaft für industrielle Kennzeichnung mbH, 63322 Rödermark | Label sheet |
| JP4769109B2 (en) | 2006-03-30 | 2011-09-07 | 株式会社サトー | Printing method for continuous continuous label |
-
2015
- 2015-04-21 JP JP2016531159A patent/JP6521962B2/en active Active
- 2015-04-21 WO PCT/JP2015/062033 patent/WO2016002317A1/en active Application Filing
- 2015-04-21 CN CN201580034582.8A patent/CN106459696B/en active Active
- 2015-04-21 KR KR1020167031558A patent/KR102341088B1/en active IP Right Grant
- 2015-05-15 TW TW104115596A patent/TWI701312B/en active
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2016
- 2016-11-18 PH PH12016502310A patent/PH12016502310A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10140105A (en) * | 1996-11-13 | 1998-05-26 | Seiko Epson Corp | Self-adhesive sheet for image forming apparatus and method for transporting self-adhesive sheet for image forming apparatus |
| CN101124285A (en) * | 2005-02-21 | 2008-02-13 | 琳得科株式会社 | Multilayer sheet, winding of multilayer sheet, and method for producing them |
| JP2008018614A (en) * | 2006-07-12 | 2008-01-31 | Lintec Corp | Laminated sheet, winding body for laminated sheet and method for manufacturing them |
| JP2009160869A (en) * | 2008-01-09 | 2009-07-23 | Lintec Corp | Laminated sheet, laminated sheet roll and their production process |
| JP2011068130A (en) * | 2009-08-26 | 2011-04-07 | Kantaro Nomura | Textile seal, textile sheet, seal, adhesive sheet, and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI701312B (en) | 2020-08-11 |
| KR102341088B1 (en) | 2021-12-20 |
| JPWO2016002317A1 (en) | 2017-04-27 |
| KR20170022973A (en) | 2017-03-02 |
| CN106459696A (en) | 2017-02-22 |
| TW201600579A (en) | 2016-01-01 |
| JP6521962B2 (en) | 2019-05-29 |
| PH12016502310A1 (en) | 2017-02-13 |
| WO2016002317A1 (en) | 2016-01-07 |
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